TY  - BOOK
AU  - Nag, Prithvish  .
TI  - Geographical information system: concepts and business oportunities / 
SN  - 81-8069-435-6
U1  - U:(BV) 
PY  - 2007///
CY  - New Delhi : 
PB  - Concept Publishing Company , 
KW  - Geographic information systems-India
ER  -